Here we investigate, using relativistic fluid theory and Vlasov-Maxwell simulations, the local heating of a dense plasma by two crossing electron beams. Heating occurs as an instability of the electron beams drives Langmuir waves, which couple nonlinearly into damped ion-acoustic waves. Simulations show a factor 2.8 increase in electron kinetic energy with a coupling efficiency of 18%. Our results support applications to the production of warm dense matter and as a driver for inertial fusion plasmas.
- relativistic fluid theory
- Langmuir waves
- Vaslov-Maxwell simulations
- ion-acoustic waves
Ratan, N., Sircombe, N. J., Ceurvorst, L., Sadler, J., Kasim, M. F., Holloway, J., Levy, M. C., Trines, R., Bingham, R., & Norreys, P. A. (2017). Dense plasma heating by crossing relativistic electron beams. Physical Review E, 95, . https://doi.org/10.1103/PhysRevE.95.013211